1930 (6 Jun) airmail cover from Broome to Perth with KGV 4½d tied by Broome cds, overweight and therefore underpaid 3d airmail fee, handstruck 'T' with manuscript '6D', 1922-30 Third Wmk 3d Postage due pair tied by Perth cds, 10 JE 30. Very fine. BW cat AU$100 on cover